{"id":18,"date":"2026-11-06T19:04:04","date_gmt":"2026-11-06T11:04:04","guid":{"rendered":"https:\/\/kerkepm.com\/machines\/two-stage-single\/"},"modified":"2026-11-11T23:40:55","modified_gmt":"2026-11-11T15:40:55","slug":"two-stage-single-screw","status":"publish","type":"page","link":"https:\/\/kerkepm.com\/es\/machines\/two-stage-single-screw\/","title":{"rendered":"Two-Stage Single Screw Line SE\/SE"},"content":{"rendered":"<div class=\"k3\">\n<div class=\"wrap\"><div class=\"crumbs\"><a href=\"\/\">Home<\/a><span>\/<\/span><a href=\"\/machines\/\">Machines<\/a><span>\/<\/span>Two-stage SE\/SE<\/div><\/div><div class=\"wrap\"><div class=\"hero\">\n<p class=\"kicker\">Machine \u00b7 Two-stage SE\/SE<\/p>\n<h1>Two-Stage Single Screw Line SE\/SE<\/h1>\n<p class=\"dek\">Single screw plus single screw: the first stage melts and compacts, the second degasses and pressurizes. Built for washed agricultural film and heavily printed material where a twin screw would wear out. A reference two-stage single screw page from Kerke.<\/p>\n<div class=\"byline\"><div><b>Updated<\/b> 6 November 2026<\/div><div><b>Scope<\/b> Film & Woven Bag Recycling<\/div>\n<div><b>Delivery<\/b> 30\u201345 working days<\/div><div><b>Voltage<\/b> built for destination<\/div><\/div>\n<\/div><\/div>\n<div class=\"wrap\"><div class=\"appmedia\">\n<div class=\"mslider\" id=\"appslider\">\n<div class=\"ms-frame\"><div class=\"ms-slide on\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/machine-two-stage-single-s1.webp\" alt=\"two-stage single screw\" loading=\"lazy\"><span class=\"ms-cap\">Two-stage SE SE \u2014 workshop photo 1, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/machine-two-stage-single-s2.webp\" alt=\"Two-stage SE SE \u2014 workshop photo 2, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">Two-stage SE SE \u2014 workshop photo 2, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/machine-two-stage-single-s3.webp\" alt=\"Two-stage SE SE \u2014 workshop photo 3, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">Two-stage SE SE \u2014 workshop photo 3, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/machine-two-stage-single-s4.webp\" alt=\"Two-stage SE SE \u2014 workshop photo 4, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">Two-stage SE SE \u2014 workshop photo 4, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/machine-two-stage-single-s5.webp\" alt=\"Two-stage SE SE \u2014 workshop photo 5, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">Two-stage SE SE \u2014 workshop photo 5, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/machine-two-stage-single-s6.webp\" alt=\"Two-stage SE SE \u2014 workshop photo 6, Kerke workshop, Nanjing\" loading=\"lazy\"><span class=\"ms-cap\">Two-stage SE SE \u2014 workshop photo 6, Kerke workshop, Nanjing<\/span><\/div><div class=\"ms-slide\"><div class=\"ms-video\" data-yt=\"VnK2vPgUpKQ\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/11\/machine-two-stage-single-s1.webp\" alt=\"Running video \u2014 Two-stage SE SE, Kerke workshop\" loading=\"lazy\"><button type=\"button\" class=\"ms-play\" aria-label=\"Play video\">&#9654;<\/button><\/div><span class=\"ms-cap\">Running video \u2014 Two-stage SE SE, Kerke workshop<\/span><\/div><\/div>\n<button type=\"button\" class=\"ms-nav prev\" aria-label=\"Previous slide\">&#8249;<\/button>\n<button type=\"button\" class=\"ms-nav next\" aria-label=\"Next slide\">&#8250;<\/button>\n<div class=\"ms-dots\"><button type=\"button\" data-i=\"0\" class=\"ms-dot on\" aria-label=\"Slide 1\"><\/button><button type=\"button\" data-i=\"1\" class=\"ms-dot\" aria-label=\"Slide 2\"><\/button><button type=\"button\" data-i=\"2\" class=\"ms-dot\" aria-label=\"Slide 3\"><\/button><button type=\"button\" data-i=\"3\" class=\"ms-dot\" aria-label=\"Slide 4\"><\/button><button type=\"button\" data-i=\"4\" class=\"ms-dot\" aria-label=\"Slide 5\"><\/button><button type=\"button\" data-i=\"5\" class=\"ms-dot\" aria-label=\"Slide 6\"><\/button><button type=\"button\" data-i=\"6\" class=\"ms-dot\" aria-label=\"Slide 7\"><\/button><\/div>\n<\/div>\n<div class=\"appmedia-text\">\n<section class=\"qa\" id=\"answer\"><nav class=\"wp-block-rank-math-toc-block k3-toc\" aria-label=\"On this page\"><b>On this page:<\/b><a href=\"#rm-s1\">Quick answer<\/a><a href=\"#rm-s2\">Parameter table<\/a><a href=\"#rm-s3\">Why two stages for film<\/a><a href=\"#rm-s4\">What this machine is normally bought for<\/a><a href=\"#rm-s5\">FAQ<\/a><\/nav><h2 id=\"rm-s1\">Quick answer<\/h2><p>SE\/SE two-stage single screw lines handle <strong>PE\/PP film, woven bag and low-bulk-density scrap<\/strong> at <strong>200\u20132,000 kg\/h<\/strong>: a compactor-fed first stage melts and degasses, the second stage filters and builds die pressure. It is the cheapest configuration that still produces saleable pellets from film.<\/p><\/section>\n<\/div>\n<\/div><\/div>\n<div class=\"wrap\"><div class=\"grid\"><main>\n<div class=\"stats\"><div class=\"stat\"><b>120 \/ 150 \/ 180 mm<\/b><span>configurations<\/span><\/div><div class=\"stat\"><b>100\u2013800 kg\/h<\/b><span>output<\/span><\/div><div class=\"stat\"><b>2 stages<\/b><span>melting, degassing<\/span><\/div><\/div>\n<p class=\"note\">Workshop photos and a running video \u2014 shot on our own lines, not stock images.<\/p>\n\n<h2 class=\"sec\" id=\"specs\" id=\"rm-s2\">Parameter table<\/h2>\n<div class=\"tw\"><table><caption><b>Table 1.<\/b> Two-stage SE\/SE \u2014 models and reference output.<\/caption>\n<thead><tr><th scope=\"col\">Configuration<\/th><th scope=\"col\">Stage 1<\/th><th scope=\"col\">Stage 2<\/th><th scope=\"col\">Output (kg\/h)<\/th><th scope=\"col\">Feed<\/th><\/tr><\/thead><tbody><tr><td class=\"num\"><a href=\"\/machines\/se-120-se-120-two-stage-single-screw-extruder\/\">SE-120 \/ SE-120<\/a><\/td><td class=\"num\">120 mm<\/td><td class=\"num\">120 mm<\/td><td class=\"num\">200\u2013400<\/td><td class=\"num\">Film, bag, rigid regrind<\/td><\/tr><tr><td class=\"num\"><a href=\"\/machines\/se-150-se-150-two-stage-single-screw-extruder\/\">SE-150 \/ SE-150<\/a><\/td><td class=\"num\">150 mm<\/td><td class=\"num\">150 mm<\/td><td class=\"num\">400\u2013800<\/td><td class=\"num\">Film, woven bag<\/td><\/tr><tr><td class=\"num\"><a href=\"\/machines\/se-180-se-180-two-stage-single-screw-extruder\/\">SE-180 \/ SE-180<\/a><\/td><td class=\"num\">180 mm<\/td><td class=\"num\">180 mm<\/td><td class=\"num\">800\u20132,000<\/td><td class=\"num\">Woven bag, heavy film<\/td><\/tr><\/tbody><\/table><\/div>\n<p class=\"note\">Reference output measured on the stated material family; subject to a material trial. Motor and torque values are per machine, not per screw shaft.<\/p>\n\n<div id=\"detail\"><h2 class=\"sec\" id=\"rm-s3\">Why two stages for film<\/h2>\n\n<p>Film has a bulk density around 30\u201380 kg\/m\u00b3. A single screw cannot draw it in, and a single-stage forced feeder still gives unstable output. The first stage in an SE\/SE line is a compactor-fed extruder that densifies and melts; the second stage only filters and pressurizes \u2014 so output is stable and the screen changer does not see unmelted flakes.<\/p>\n\n<h3>What decides pellet quality here<\/h3>\n\n<p>Not the extruder \u2014 the upstream washing and drying. Moisture above 1% gives porous, smelly pellets regardless of machine quality. We quote washing lines together with the pelletizing line for this reason.<\/p><\/div>\n\n<h2 class=\"sec\" id=\"apps\" id=\"rm-s4\">What this machine is normally bought for<\/h2>\n<div class=\"cards\"><a class=\"card\" href=\"\/applications\/recycled-plastic-pelletizing\/\"><h3>Waste Plastic Recycling Pelletizing Line<\/h3><p>Recycling output is decided at the feeder, not at the screw. Film needs forced feeding and pre-compaction; the same ex\u2026<\/p><span class=\"meta\">Film, Bottle Flakes & Regrind<\/span><\/a><\/div>\n\n<h2 class=\"sec\" id=\"faq\" id=\"rm-s5\">FAQ<\/h2>\n<details open><summary>Why two single screws instead of one?<\/summary><p>One screw cannot both plasticize cold, low-bulk-density film and pull a deep vacuum. Splitting the duties doubles the working length without doubling the wear cost.<\/p><\/details><details><summary>How dirty can the input be?<\/summary><p>Up to 5% contamination by weight with a screen changer and regular purging; above that, washing and drying upstream is cheaper than wear parts.<\/p><\/details><details><summary>Is the output stable enough for film blowing?<\/summary><p>Yes, with gravimetric feeding and a melt pump. Without a pump, pressure variation shows up as gauge bands.<\/p><\/details>\n\n<div class=\"method\"><h2 id=\"rm-s6\">Where these numbers come from<\/h2>\n<p>Screw diameters, speeds, motor ratings, torque and reference output come from the Kerke parameter table and the product master data sheet, and are cross-checked against commissioning records. Where a catalogue value and a trial value disagree, the trial value is the one we quote.<\/p>\n<p>Reviewed by the Kerke process team, Nanjing. Page updated 6 November 2026.<\/p><\/div>\n\n<div class=\"related\"><h2 id=\"rm-s7\">Related<\/h2><div class=\"rel-grid\"><a class=\"rel\" href=\"\/machines\/single-screw-extruder\/\"><span>Machine<\/span>Single screw SE<\/a><a class=\"rel\" href=\"\/applications\/recycled-plastic-pelletizing\/\"><span>Application<\/span>Waste Plastic Recycling Pelletizing Line<\/a><a class=\"rel\" href=\"\/applications\/recycled-plastic-pelletizing\/\"><span>Application<\/span>Waste Plastic Recycling Pelletizing Line<\/a><\/div><\/div>\n<div class=\"cta\"><div><b>Need a capacity number for your material?<\/b><p>Send 25\u201350 kg \u2014 we return pellets, a video and a report with the parameters we used, in 3\u20137 days.<\/p><\/div>\n<div class=\"acts\"><a href=\"\/get-a-quote\/\">Get a quote<\/a>\n<a class=\"alt\" href=\"\/get-a-quote\/#trial\">Send material for trial<\/a><\/div><\/div>\n<\/main>\n<aside><h5>On this page<\/h5><ol><li><a href=\"#answer\">Quick answer<\/a><\/li><li><a href=\"#specs\">Parameter table<\/a><\/li><li><a href=\"#detail\">Selection detail<\/a><\/li><li><a href=\"#apps\">Applications<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ol>\n<div class=\"sidecard\"><b>Model or trial first?<\/b><p>A model number tells you the envelope; a trial tells you the output. We quote the second one.<\/p>\n<a class=\"btn\" href=\"\/get-a-quote\/\">Request a quote<\/a>\n<a class=\"btn ghost\" href=\"\/machines\/\">All machines<\/a><\/div><\/aside><\/div><\/div>\n<script>\n(function(){\n  var root=document.getElementById('appslider'); if(!root) return;\n  var slides=[].slice.call(root.querySelectorAll('.ms-slide'));\n  var dots=[].slice.call(root.querySelectorAll('.ms-dot'));\n  var cur=0, timer=null, locked=false;\n  function show(i){\n    cur=(i+slides.length)%slides.length;\n    slides.forEach(function(s,j){\n      s.classList.toggle('on', j===cur);\n      var v=s.querySelector('.ms-video');\n      if(j!==cur && v){ var f=v.querySelector('iframe');\n        if(f){ f.remove(); var p=v.querySelector('.ms-play'); if(p) p.style.display=''; } }\n    });\n    dots.forEach(function(d,j){ d.classList.toggle('on', j===cur); });\n    var v=slides[cur].querySelector('.ms-video');\n    if(v){ locked=true; stop(); playVideo(v); }\n  }\n  \/* \u81ea\u52a8\u64ad\u653e\uff1a3s \u4e00\u5f20\uff1b\u60ac\u505c\u6682\u505c\uff0c\u79fb\u51fa\u6062\u590d\uff1b\u8f6e\u5230\u89c6\u9891\u81ea\u52a8\u9759\u97f3\u64ad\u653e\u5e76\u505c\u7559\uff08locked\uff09\uff0c\u624b\u52a8\u5207\u6362\u540e\u6062\u590d\u8f6e\u64ad *\/\n  function start(){ if(timer || document.hidden || locked) return; timer=setInterval(function(){ show(cur+1); }, 3000); }\n  function stop(){ if(timer){ clearInterval(timer); timer=null; } }\n  function playVideo(v){\n    if(v.querySelector('iframe')) return;\n    var f=document.createElement('iframe');\n    f.src='https:\/\/www.youtube.com\/embed\/'+v.dataset.yt+'?autoplay=1&mute=1&rel=0';\n    f.setAttribute('allow','autoplay; encrypted-media; picture-in-picture');\n    f.setAttribute('allowfullscreen','');\n    var p=v.querySelector('.ms-play'); if(p) p.style.display='none';\n    v.insertBefore(f, p);\n  }\n  function manual(i){ locked=false; show(i); start(); }\n  document.addEventListener('visibilitychange', function(){ if(document.hidden) stop(); else start(); });\n  root.addEventListener('mouseenter', stop);\n  root.addEventListener('mouseleave', function(){ if(!locked) start(); });\n  root.querySelector('.prev').addEventListener('click', function(){ manual(cur-1); });\n  root.querySelector('.next').addEventListener('click', function(){ manual(cur+1); });\n  dots.forEach(function(d){ d.addEventListener('click', function(){ manual(+d.dataset.i); }); });\n  root.addEventListener('click', function(e){\n    var p=e.target.closest('.ms-play'); if(!p) return;\n    locked=true; stop(); playVideo(p.parentNode);\n  });\n  show(0);\n  start();\n})();\n<\/script>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@graph\": [{\"@type\": \"Product\", \"name\": \"Two-Stage Single Screw Line SE\/SE\", \"brand\": {\"@type\": \"Brand\", \"name\": \"Kerke\"}, \"description\": \"Single screw plus single screw: the first stage melts and compacts, the second degasses and pressurizes. 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Without a pump, pressure variation shows up as gauge bands.\"}}]}, {\"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/www.kerkepm.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Machines\", \"item\": \"https:\/\/www.kerkepm.com\/machines\/\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Two-stage SE\/SE\"}]}]}<\/script>\n<div class=\"wrap\"><section class=\"k3-more\" id=\"rm-more\"><h2>Two-stage single screw \u2014 the short version<\/h2><p>Note on two-stage single screw: what separates one machine from another is torque class, L\/D and the wear package matched to your material, not the build standard. Shortlist from the tables, then confirm the choice on a trial with your own powder.<\/p><p>Planning an upgrade this quarter? Send the material and the target output \u2014 the configuration comes back within one working day.<\/p><p>Every quotation lists the wear package as a separate line, so its cost is visible from day one.<\/p><p>Questions are answered the same day, in English or Chinese.<\/p><p>Note on two-stage single screw: the data on this page was last verified on our own test line in Nanjing.<\/p><p>Not sure which two-stage single screw configuration fits? Describe the material and the pellet shape required \u2014 we answer with a recommendation, not a brochure.<\/p><p class=\"k3-rel\"><b>Related on this site:<\/b> <a href=\"\/applications\/\">Extrusion lines by application<\/a> \u00b7 <a href=\"\/knowledge\/\">Extruder selection guide<\/a> \u00b7 <a href=\"\/get-a-quote\/\">free extrusion line quotation<\/a> \u00b7 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Twin-screw_extruder\" target=\"_blank\" rel=\"noopener\">Wikipedia: Twin-screw extruder<\/a><\/p><\/section><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Home\/Machines\/Two-stage SE\/SE Machine \u00b7 Two-stage SE\/SE Two-Stage Single Screw Line SE\/SE Single screw plus single screw: the first stage melts and compacts, the second degasses and pressurizes. Built for washed agricultural film and heavily printed material where a twin screw would wear out. A reference two-stage single screw page from Kerke. Updated 6 November 2026Scope [&#8230;]\n","protected":false},"author":0,"featured_media":1733,"parent":11,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"page-blank.php","meta":{"footnotes":""},"application":[],"app_group":[],"class_list":["post-18","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages\/18","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/comments?post=18"}],"version-history":[{"count":0,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages\/18\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/pages\/11"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/media\/1733"}],"wp:attachment":[{"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/media?parent=18"}],"wp:term":[{"taxonomy":"application","embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/application?post=18"},{"taxonomy":"app_group","embeddable":true,"href":"https:\/\/kerkepm.com\/es\/wp-json\/wp\/v2\/app_group?post=18"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}